John Cleese as Rollo Lee

Jamie Lee Curtis as Willa Weston

Kevin Kline as Vince McCain / Rod McCain

Michael Palin as Adrian 'Bugsy' Malone

Robert Lindsay as Sydney Lotterby

Ronnie Corbett as Reggie Sealions

Carey Lowell as Cub Felines

Bille Brown as Neville Coltrane

Derek Griffiths as Gerry Ungulates

Cynthia Cleese as Pip 'Small Mammals'

Richard Ridings as Hugh Primates

Maria Aitken as Di Admin

Lisa Hogan as Sealion Keeper

Georgia Reece as Sponsor

Jack Davenport as Student Zoo Keeper

Tim Potter as Vulture Keeper

Ron Donachie as Sergeant Scott

Amanda Walker as Zoo Secretary

Paul Haigh as Sergeant Irving

Grahame Wood as Student Zoo Keeper

Tom Georgeson as Sealion Spectator

Jenny Galloway as Aquarium Keeper

Kim Vithana as Tiger Keeper

Julie Saunders as Rodent Keeper

Susie Blake as Woman in Red Dress

Jennie Goossens as Sponsor

Kate Harper as TV Journalist

Kate Alderton as Student Zoo Keeper

Michael Percival as Ant Keeper

Fred Evans as Flamingo Keeper